Asterisk Record() directory traversal
| asterisk-record-directory-traversal (28564) |  Medium Risk |
Description:
Asterisk could allow a remote attacker to traverse directories on the system, caused by improper handling of file names by the Record() function. By using a client controlled variable as part of a file name, an administrator could use directory traversal techniques and overwrite arbitrary files on the system.
*CVSS:
| Base Score: | 2.1 |
| Access Vector: | Remote |
| Access Complexity: | Low |
| Authentication: | Required |
| Confidentiality Impact: | None |
| Integrity Impact: | Partial |
| Availability Impact: | None |
| Temporal Score: | 1.6 |
| Exploitability: | Unproven |
| Remediation Level: | Official-Fix |
| Report Confidence: | Confirmed |
Consequences:
File Manipulation
Remedy:
Upgrade to the latest version of Asterisk (1.2.11 or later), available from the Asterisk Web site. See References.
For Gentoo Linux:
Refer to Gentoo Linux Security Announcement GLSA 200610-15 for patch, upgrade, or suggested workaround information. See References.
References:
- Asterisk Web site: Asterisk | The Open Source PBX.
- BugTraq Mailing List, Fri Aug 25 2006 - 04:14:13 CDT: Multiple Vulnerabilities in Asterisk 1.2.10 (Fixed in 1.2.11).
- MU-200608-01: Multiple Vulnerabilities in Asterisk 1.2.10 .
- BID-19683: Asterisk Multiple Remote Vulnerabilities
- CVE-2006-4346: Asterisk 1.2.10 supports the use of client-controlled variables to determine filenames in the Record function, which allows remote attackers to (1) execute code via format string specifiers or (2) overwrite files via directory traversals involving unspecified vectors, as demonstrated by the CALLERIDNAME variable.
- GLSA-200610-15: Asterisk: Multiple vulnerabilities
- SECTRACK ID: 1016742: Asterisk Stack Overflow in MGCP Implementation Lets Remote Users Execute Arbitrary Code
- VUPEN/ADV-2006-3372: Asterisk MGCP AUEP Message Buffer Overflow and Record Application Vulnerabilities
Platforms Affected:
- Digium Asterisk Open Source prior to 1.2.10
- Gentoo Linux
Reported:
Aug 23, 2006
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The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall IBM be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.